| 摘要 |
FIELD: mechanical engineering. SUBSTANCE: head has non-rotating housing immovable relative to spindle head, faceplate 3 in whose guideways 5 support 6 as well as intermediate disk 4 are mounted for movement from step-type engine 7. Cruciform projections entering the corresponding notches of replaceable stems with gap are made on face end of disk 4. Centering pin entering the corresponding centering hole of stems is made on face end of faceplate housing. EFFECT: enhanced quality of hole boring and face end undercut in machine tools of milling-boring series with numerical programmed control, enhanced reliability. 6 dwg |
